Patriots agreed to terms with RT Sebastian Vollmer on a four-year contract.ESPN Boston first broke the news, and the Boston Herald had the years. After a shockingly quiet market in the first two weeks of free agency, it became increasingly apparent Vollmer would return to Foxboro. Offensive tackles flew off the market the first two days, leaving second-wave OTs Vollmer, Andre Smith, and Eric Winston to miss the boat on big money. New England will bring back its entire starting offensive line for 2013. One of football's top pass protectors when healthy, 28-year-old Vollmer graded out as a top-four right tackle in Pro Football Focus' 2012 ratings.